# Class QuasiLinearTheory¶

## Class Documentation¶

class QuasiLinearTheory

Scales the steplength according to quasi linear theory.

Following quasi-linear theory [Schlickeiser1989], the mean free path $$\lambda$$ of a particle with energy $$E$$ and charge $$Z$$ in a field with turbulence spectrum $$\frac{k}{k_{\min}}^{-q}$$ is